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WICI Presentation to FLEWUG

This presentation explores the application of "soft" and "hard" technology to enhance capacity and quality in land mobile radio networks. Topics include channel aggregation, trunking, smart antenna technology, and improved features.

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WICI Presentation to FLEWUG

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  1. WICI Presentation to FLEWUG Application of “Soft” & “Hard” Technology to Improve Capacity & Quality in Land Mobile Radio Networks June 13, 2000 Enlightening ideas to wireless solutions

  2. Agenda • Lumenix Corporate Overview • VRI Corporate Overview • Case Study - Nextel Communications • Soft & Hard Technology Application • Conclusion Enlightening ideas to wireless solutions

  3. Technical & Business Consulting Strategic Wireless Planning Wireless Program Management Modeling & Simulation IV&V Technical Training & Customer Support Information Technology Specialized Software Development ASP System Architecture Database Management System Design & Integration Lumenix Corporate Capabilities Wireless Data Applications • Geolocation & Mobile Data Messaging • Enabling Wireless Web Sites • Wireless Corporate Portals • Specialized Application Development (WAP, Palm OS, CDPD, others) Wireless Engineering • Commercial Wireless Networks • Public Safety Network Design • Radio Network Optimization • Voice & Data Wireless Design • Wireless LAN, WAN, PBX Enlightening ideas to wireless solutions

  4. Information Technology Information Systems Planning Requirements Definition Technology Evaluation Data Quality Engineering System Design & Development System Installation Clients Department of Defense Department of Treasury Department of Health & Human Services OPIC States Commercial VRI Corporate Capabilities Analysis & Consulting • Policy Development • Modeling & Simulation • Economic Analysis • Re-Engineering • System & Operational Effectiveness Enterprise Support • Program Management • Customer Support & Training • Web Server Hosting • System Testing Laboratories • Database Administration • Systems Administration SIMPLIFY SUSTAIN SOLVE SATISFY Enlightening ideas to wireless solutions

  5. Case Study Nextel Specialized Mobile Radio (SMR) • Nextel SMR network similar to LMR public safety radio network • Original SMR network design (prior to 1990) • High power/large coverage area base station design • Five and ten channel – low capacity networks • Current SMR network design (1990 to present) • Low powered, smaller coverage area base station design • Radio channel aggregation per market • Extensive co-channel reuse per market to increase capacity • Site-to-site “hand-off” incorporated into network Enlightening ideas to wireless solutions

  6. Soft Technology Radio channel aggregation Tower top LNA application Convention directional antennas Frequency reuse and cell splitting Hard Technology Trunked LMR implementation Smart antenna technology Improved vo-coder to 6.25 MHz channel Multi-band radios “Soft” and “Hard” Technology Application Enlightening ideas to wireless solutions

  7. LMR Channel Aggregation • Independent radio channel management per bureau/agency • Traditionally required for security of mission critical activity • Low carrying capacity due to limited channel availability • Channel sharing requires extensive radio unit programming • Department/agency channel aggregation • Centralize frequency management • Overcome political barriers to channel aggregation • Greater carrying capacity of network Enlightening ideas to wireless solutions

  8. Channel Trunking Capacity Analysis • Assumptions • 15 seconds average communication duration • Erlang table with 1% blocking Enlightening ideas to wireless solutions

  9. Alternative “Soft” Technology Applications • Tower top low noise amplifier • Uplink radio coverage imbalance (additional Rx sites) • Improve Rx reception quality from 4-7dB • Reduce Rx site requirements • Increase co-channel reuse per market/region • Reduce base station power • Reduce base station height • Add additional base stations • Incorporate directional antennas • Reduce distance-to-reuse (D/R) • Increase system capacity Enlightening ideas to wireless solutions

  10. Tx Coverage Rx Coverage Typical Conventional LMR Network Diagram x x x x x x x x x x x x Enlightening ideas to wireless solutions

  11. Tx Coverage Rx Coverage Typical Conventional LMR Network DiagramWith Tower Top LNAs x x x x x x x x Enlightening ideas to wireless solutions

  12. x x Omni Directional Antenna Base Station Design Enlightening ideas to wireless solutions

  13. Directional Antenna Base Station Design Directional Antenna Base Station Design Enlightening ideas to wireless solutions

  14. x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x LMR Channel Reuse Design Architecture Tx Coverage Rx Coverage Enlightening ideas to wireless solutions

  15. “Hard” Technology LMR Applications • Trunked radio networks • Increased network capacity (channel aggregation required) • Interoperability enhancements • Interconnection to PSTN (Public Switch Telephone Network) • Improved features • Channel privacy • One-to-one, one-to-all, one-to-talk group communication • Channel queuing • Priority access for immediate channel access Enlightening ideas to wireless solutions

  16. “Hard” Technology LMR Applications (cont.) • Improved APCO 25 vo-coder for capacity enhancement • Double capacity over current 12.5 MHz channel • Multi-band LMR radio technology • 30-50 MHz • 136-178 MHz • 403-470 MHz • Smart antenna technology • Uplink and downlink improvement of 5-8 dB • Multi-antenna “beam streaming” array design • Integration with manufacturer requirement • Channel capacity and quality improvement • 450-520-MHz • 800 MHz • 900 MHz • New 700 MHz band Enlightening ideas to wireless solutions

  17. Smart Antenna Architecture & Performance Enlightening ideas to wireless solutions

  18. Conclusions • Develop best suited short-term and long-term strategic approach to enhance network capacity and quality • Pursue bureau/agency channel aggregation • “Soft” technology application • Channel aggregation • LNA deployment • Directional antennas • Cell splitting and frequency reuse Enlightening ideas to wireless solutions

  19. Conclusions (cont.) • “Hard” technology application • Deploy trunked networks • Upgrade to 6.25 MHz vo-coder • Multi-band radios • Smart antennas • Cooperative support from radio manufacturers • Lobby for new frequency allocation Enlightening ideas to wireless solutions

  20. Contact Information Lumenix Rick Burke 7611 Little River Turnpike, Ste. 404W Annandale VA 22003 rburke@lumenix.com www.lumenix.com Vector Research Inc. Kirit Amin 901 S. Highland St. Arlington, VA 22204 amink@vrinet.com www.vectorhome.com Enlightening ideas to wireless solutions

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